Metal-shaping machine.



'L. B. KAUFFMANN. METAL SHAPING MACHINE. APPLICATION FILED NOV. 17, 1909.

3 SHEETS-SHEET 1.

lxh/tvwooco: m avwewtoz $3 I v Patented Jan. 23, 1912.

L. B. KAUFFMANN. METAL SHAPING MACHINE. APPLIOATION FILED NOV. 17, 1909.

Patented Jan. 23, 1912.

3 SHEETSSHEET 2.

COLUMBIA PLANOGRAPH 60.. WASHINGTON. D. c.

L. B. 'KAUFFMANN. METAL SHAPING MACHINE. APPLIOATION FILED NOV. 17, 1909.

1,015,324, Patented Jan. 23, 1912.

SBHBBTB-HHEETB. Pg 4.

COLUMBIA PLANOGRAPH CO.. WASHINGTON, D. C.

nnITEnsTA'lEs OFFICE.

LOU B. KAUFFMANN, or NEW-YORK, N. Y., ASSIGNOR T0 KAUFFMANN KASE KOM- PANY, 01? NEW YORK, N. Y., A CORPORATION OF NEW YORK.

METAL-SHAPING- MACHINE.

for shaping metal strips into angles and frames.

7 In certain aspects of the invention it relates more especially to machines for forming a double angled frame without cutting'away the metal, that is, a framewith' one bend, usually at right angle,- running lengthwise of the strip? of metal, and,abend in both of these two angled parts trans versely of the strip, and in the vplane of one of said angled parts and tr'ansverselylto the plane of the othero The invention-consists in'the novel parts, constructions, arrangements, combinatioi'is and improvements herein shown and de scribed. The accompanying drawings, referred to herein and forming a part hereof, illustrate one embodiment of the invention, the same serving in connection with the description herem to expla n the prmclples of the mvention. I Of the drawings: Flgure 1 IS a front elevation of a machine constructed in accord- 1 ance with the principles of the invention Fig. 2 is a side elevation looking at Fig:

gun Flg.

"1 from the left; Fig. 3 is a sectional plan on the line A 513 of Figs. 1 and 2, but omitting some parts for clgarness, Fig. if is afragmentary view of certain ofthe parts before the bending of the blank is be- 5 is a View of the same. parts Fig. 4 but showing the closing shown in together of the bendshownin 1.; and

Fig. 6 is a plan corresponding'to parts of g I I" Referring by way of example to the ace companying drawings, which illustrate one embodiment of the invention, a machine is shown adapted to receive the"; sheet or strip of metal to be formed up into an angle or angled frame. Said machine is further shown constructed to .receive either a plane sheet 7 strip, or an angled sheet or an angled "strip.

The plunger 25 is In the drawings the machine is shown oper v l Specification of Iletters Patent. Patented J an, 2 3, 1912 i l Application filed Nove mb er 1'7, 1909. Serial Bo /528,590. j g y ating upon a strip a? bent longitudinally f thereof throughout at a right anglefthus 1 constituting two parts at right .angles to each other. a I v The sheet or strip on is shown supported on the members 1 and 2', which are shaped to support both p arts of the strip in propenposition wlth respect to the machine parts, (although a so far as concerns manyfeaturespf the in ventiontlie strip might be supported on the machine frame. The members land 2 perform other functions which will L be de- I scribedhereinafter. There are also provided 'isuita'ble .means for] positioning the strip lengthwise,- the embodied form thereof comprising aygage6 shown slidably adjustable upon the support 7 and having a clamp- U ing screw 8 or other suitable fastening device'.'

Suitable means are provided J by theiinventlon for holding the strip in position,

to be operated on, and in the"illustrated form thereof a member 1 2 is shown movable -1nto and out of'contact'withthestrip.

member '12 is shown slidable in guides,13

carried by "the machine frame and having a suitable crosshead 14:, and connected to said cross head'are the rods 15'. Said-rods are shown provided at their farther ends with yokes 16, which'embrace a shaft 17; The yokes 16 are shown with friction rolls 18 cooperating with cams-19 upon the shaft' 17. Suitable means are provided for forming" a bend in-the strip to form into two parts at. A

Ian angle to each other. In this embodiment thebend is formed in one of the-parts of the strip in order to so bend the entire strip; 7 A form of such means shown herein is further adaptedto form abend beginning at orcon 'tiguous' t'o the longitudinal bend in the strip heretofore described and then dejepeningofut wardly to the edge of the strip, so that when; this bend is closed together the entire strip may thereby be bent around at an angle.

Theembodiedform of such means comprises a plunger 25 shownconvemently as'worklng within the 1nember12 and serving to bend the strip in down into the members 1 and 2. shown fixed to a'slide 26 In the guides 27 upon themachine working Fixed to the slide 26 is fshown a frame.

. yoke 28 embracing the shaft 17 ,and provided with a'roller29 with which cooperates a cam 30 upon the shaft 17 Another roller 31 is shown mounted upon the slide 26 and cooperating with a cam 32 upon the shaft 17.

So far as concerns certain features of the invention, the mechanism just described may be relied on to make the bend in the part y of the strip 022. According to other features of the invention, however, a forming die is provided to cooperate with the plunger or former 25. In the illustrated embodiment a suitable die block 35 is shown provided with a hollowed out portion 36 which is shown as beginning on the face of the block and increasing in depth toward an end thereof in order to form a bend in the metal in the manner already described, and as shown most clearly in Fig; 2 of the drawings. The block 35 is shown located between the members 1 and 2 which are separated from each other a distance corresponding substantially to the width of the bend to be made in the metal. The block 35 is shown reciprocable in a guide 37 in the machine frame to move out of the'way of blocks 1 and 2 during the operation of closing or folding the bend in the metal upon itself. Suitable actuating means for reciprocating the block are provided and the illustrated form thereof comprises a link 38 pivoted to said block 35 and to a lever 39 pivotally mounted on the machine frame. The other end of said lever is shown provided with a roller 40 working in, groove 41 of the cam 42 carried by the shaft 17 There is provided by one feature of the lnvention means for closing together the bend made in the metal strip, and in the illustrated form of such means the members 1 and 2 are utilized as closing jaws or blocks. Said members are shown slidably mounted in a groove 45 and a groove 46 in the machine frame. Suitable actuating and controlling means for these closing jaws are provided, the illustrated form thereof comprising pivoted links 47 and 48 connecting the blocks 1 and 2, respectively, with levers 49 and 50. Said levers are shown with their other ends provided with rollers 51 and 52 working in the groove cams 53 and 54 fixed on the shaft 17.

In accordance with one feature of the invention means are provided for forming or truing the angle formed by the bending of the strip. In the illustrated form thereof the member 12 is shown provided with inclined faces and 61 inclined to each other at the angle to which the strip is to be bent.

In the drawing this is shown as a right angle. Cooperating with said faces 60-and 61 is shown a forming block 65 having correspondingly inclined faces 66 and 67 which serve to press the part a of the strip firmly against the faces 60 and 61 in order to set the corner and prevent either back springing or deformation. The block 65 is shown reciprocable in grooves or guides 68 in the machine frame. The block 65 is actuated 111 a suitable manner, as through a link (39 pivoted thereto and to a lever 70, which lever is pivotally carried on the machine frame. Said lever 70 is shown provided with a roller 71 in operative relation with a suitable cam 72 on the shaft 17.

Suitable powercon'nnunicating devices will of course be provided, but are not shown or described in detail herein, as they fall within the province of mechanical skill.

The manner of operation of the mechanism described and shown is substantially as follows: The strip a: is placed in position in the machine and may be longitudinally positioned against the gage (3. The member 12 is then brought down lightly upon the strip 00 so as to prevent it buckling or moving out of position while at the same time permitting the two parts of the strip to move as the new angle is formed in the strip (see Fig. 4). \Vhen the strip is thus in position the die block 35 is between the closing blocks 1 and 2, and the former 25 is moved downwardly, as shown in Fig. 1, to bend the metal between the edges of the blocks 1 and 2 and form the angle between the parts y and a of the strip a" in a direction deepening outwardly to the edge of the strip. The two ends of the strip a will swing around to a corresponding degree, thereby forming the new angle in the whole strip. The die block 35 is then withdrawn and the closing blocks 1 and 2 move toward each other to close up the bend in the metal as shown in Fig. 5 of the drawings. The forming block 65 presses with the faces 66 and 67 against the back of the part a of the strip m pressing against the surfaces (50 and 61 of the member 12 (see Fig. (3). The member 12 is then raised, and the strip a: may be-either removed or moved to a new position for a second operation thereon. When a frame is to be formed the successive angles may be made in a strip at until the ends of the strip are brought together, when they may be welded.

From all the foregoing it will be understood that a machine has been provided realizing the objects of invention and the advantages herein set forth, together with other objects and advantages.

The invention, in its broader aspects, is not limited to the particular constructions shown, nor to any particular constructions by which it has been or may be carried into effect, as many changes may be made in the construction without departing from the main principles of the invention and without sacrificing its chief advantages.

hat I do claim as my invention and desire to secure by Letters Patent is 1. A metal forming machine including in combination means for positioning a strip of'metal bent longitudinallyinto twoparts at substantially right angles to eachother, a

reciprocable die block movable into and out of operative relation with one of the parts of said strip, said die block being. hollowed from said longitudinal bend betweenthe tudinal fold and deepening outwardly .to

the edge of the strip, a pair of reciprocable blocks at either side of said die block vfor closing said bend supon itself, means for moving said dieblock out of operative relation with the strip after the bend is cable blocks together to close said bent por-' tion upon itself, and means for engaging said strip at the point of formation of said bend and causing it to form substantially right angle at the point of bend when the bend is closed upon itself'by said blocks:

2. A metal forming machine including in combination means for positioning a strip of metal bent longitudinally into two parts at right angles to each other, an engaging member movable into engagement withone of said parts of said strip, said member having a right angled part presenting its edge to said other part of said strip, a die block movableinto position on the opposite a face of the strip from said member, said die block beinghollowed from a point o pposite said angled portion with increasing depth outwardly to the edge of said strip,

a former for bending said part of the strip into the hollow of the die block with a depth increasing from said longitudinal bend o'utwardly to the edge of the strip, means for withdrawing the die'blockfrom operative relation with the strip,-and' means for closing said bend together upon itself whereby.

the entire strip is bent at a right angle, and the other part ofthe strip is bent about; the

right angled part of said engagingmember;

3. A metal forming machine for operating upon a strip of metal bent longitudi nally throughout its length including in combination a movable member which con tacts with a surface of one of said bent parts of the strip and having an angle against the other of said bent parts, a movable former working within said member and operating upon said first mentioned bent part, a movable die block on the opposite side-of said bent part from the former to cooperate with the former in bending said partanda pair of movable closing blocks for closing s id bend upon itself. j 1 I 4. A metal formlng machine for operat ing upon a strip of metal bent longitudi nally throughout its length including in combination a reciprocating member which contacts with a surface of one of said" bent parts tram strip and having an angle against the other of said bent parts, are-V ciprocating former, working within said member andoperating upon said firstmentioned bent part, a reciprocating die block "onthe opposite side of said bent part from theformer to cooperate with the former in bendingsaid part, and a pair of reciprocating closing blocks for closing said bend upon itself. I v

AT" etal'forming machine for operat- 'ing.'upon a. stripof vmetal bent longitudr nally :throughout its length including "m tacts with a surface of one of said bent, parts; of the strip and having an angle formed, means for movlng said recipro-' combination a movable member which con against. the other of said bent parts, a movable foriner operating upon said first men- A tioned bent part, a movable vdie block onthe former to cooperate withthe former in bend-- ing said part and a pair" of movable closing Y blocks for closing said bend upon iitself.

6; A" machine for operating upon a strip" ofmetal including in combination a movable'm'ember which contacts with one face of the. strip,a movable former working within said member, a movable die blockon the opposite face of said strip from v.said. formersxto' cooperate with said former in makingabend in said strip, and a pair of movable closing blocks for closing said bend upon itself. a v

7, A machine for operating upon a strip of metal including in combination a .reciprocating member which contacts with one face of the strip, a reciprocatingformer s5 opposite side of said bent part from, the,

working within said member, a reciprocating Ldie block on the opposite face of" said strip from said former to cooperate with said former in making a bend in said strip, and a 13311" of rec procating clos ng blocks for clos1ngsa1d bend upon ltself.

8. A machine for operating upon astrip of metal including in combination .a movable member which contacts with one face of the strip, a movable former, a movable a dielblock on the opposite face of said strip from; said former to cooperate with said former in making a'bend in said strip, and a pair'of movable closing blocks for closing said ibend upon itself.

" 9." A metal forming machine including in I combination a pair of reciprocating closing blocks upon which the strip rests, a die block: reciprocable-between and away from said closing blocks, a former on the opposit-e side ofthe strip and cooperating with said die block to bend the strip, and means for causing the closing blocks to move to gethen- 'to close or fold said bend upon itself after the dieblock has moved away fronrbetween said closing blocks.-

10."A metal forming machine including in combination a reciprocating former for bending a sheet of metal thereinto, and two closing blocks reciprocable across the path of the'die block for closing said bend upon itself.

11. A metal forming machine including in combination means for positioning a metal strip folded longitudinally into two parts at right angles to each other, a die block movable into and out of position with reference to one of said parts, a movable member for formingthe metal of said part into the die, means for withdrawing said die block, and movable means for engaging said shaped or formed part and pressing or folding it together upon itself.

12. A metal forming machine including in combination a die block, a former for bending a sheet of metal thereinto, means for removing the die block a member movdie block, a

able into the place previously occupied by the die block and a member cooperating therewith to fold or close the bend upon itself.

13. A metal forming machine including 2 in combination a former engaging said strip on one face thereof to bend the strip, a die block movable into and out of position 011 the opposite face thereof to cooperate with said former, blocks for engaging the bend made by the former and its die block to close said bend upon itself.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses,

LOU B. KAUFFMANN.

Witnesses JOHN D. MORGAN, Rosn MENK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

and movable closing 30 

